18k Rose Gold
Unique timepiece


The microcosm of the macrocosm

The genesis of a magnus opus

The story actually begins well before our times in the mysterious confines of outer space. Meteorites, some older than Earth itself, travelled billions of miles through space and ultimately found a home on our planet. Imagine these rocks coming from another world… They are of such unique composition that the price per gram surpasses that of gold and platinum combined. Just think of these materials that bore witness to the shaping of our solar system, that contain the first known traces of life in the cosmos. They can tell us stories of the stars that we are just beginning to comprehend.

Today, after their interstellar journey, these heavenly treasures have been assembled by Les Ateliers Louis Moinet into a unique timepiece: COSMOPOLIS.

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Cosmopolis LM-135.50.CO

Caliber LM135

Manufacture Calibre


28800 VPH (4 Hz)

96 hours

Jewels: 26

40.7 mm

Hours, Minutes

Hours, Minutes

30 meters


20 mm

Folding clasp

18k Rose Gold
12 different meteorite fragments dial

Swiss made



“the most meteorite inserts in a watch”

Geneva, 21 September 2023

The COSMOPOLIS is in the spotlight on Thursday, 21 September, in Geneva, Switzerland. It is receiving a prestigious GUINNESS WORLD RECORDS™ title for “the most meteorite inserts in a watch” This means that Les Ateliers Louis Moinet will from now on be known beyond the borders of traditional watchmaking, where it will generate amazement for its sheer rarity globally.

This world record will also confirm the boundless creativity of Jean-Marie Schaller and his ability to generate emotions and make us dream. This title also reflects his deep gratitude towards his solid network of friends, passionate supporters, and craftsmen who contribute daily to the development of Louis Moinet watches.

When watchmaking incarnates the universe in a unique timepiece and is honored with a world record.
“My collection contains rare pieces, like the lunar meteorite Dhofar 461, which is known for its white-speckled interior. And I have a valuable meteorite from Mars that is one of 300 samples identified to this day. I also have the famous Allende, the oldest rock in the solar system, and Erg Chech, the oldest magmatic rock known, which comes from a protoplanet that vanished at some point. As for the Jbilet Winselwan, what makes it remarkable are the traces of amino acid, which might well be the first signs of life in the cosmos. The Sahara 97093, on the other hand, distinguishes itself through its micro-diamonds, which took shape at the heart of stars that exploded and became supernovas.”
“These fascinating stories were the creative spark that gave birth to the COSMOPOLIS. Even more than a great watchmaking work, COSMOPOLIS is a historic and scientific journey, a microcosm of the macrocosm.”

Jean-Marie Schaller



an evocative name

The name COSMOPOLIS pays tribute to the connection between our world and the infinite universe. The prefix cosmo- suggests the sheer size of the cosmos, the stars, their mysteries. The suffix -polis suggests the cultural and artistic spirit of the cities. Together, the name COSMOPOLIS embodies the very essence of this watch by merging the fascination for space with the timeless elegance of the watchmaking craft.

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Twelve meteorites

An exceptional constellation

An aura of mystery emanates from the COSMOPOLIS. The time appears subtly between the meteorites, drawing the eye at each glimpse and inviting one to explore a cosmic microcosm. The dial itself is the stage for a veritable celestial theatre. Each fragment of meteorite has been placed so as to create a unique and fascinating constellation. In the centre is the rarest and most captivating stone of all, a lunar meteorite. One of these outstanding fragments, a black chondrite, is located in the back of the tourbillon cage, the beating heart of the mechanism. It’s a reminder of the powerful cosmic forces that have forged our universe.

Ten other special fragments have been carefully disposed, each on its own base that is discreetly attached to dark-grey, brushed dial. Each of celestial gems, is a witness to the origins of our solar system, each tells a billion-year-old story, one that includes the extraordinary voyage that them right to the COSMOPOLIS.

These slivers of history, these glimpses of eternity, these slices of the cosmos, this constellation of meteorites fuse space-time and the world of watchmaking to create the rarest work of art.

Haute horlogerie and the flying tourbillon

To defy gravity in a particularly spectacular way, COSMOPOLIS comes with an off-centre tourbillon in the subdial at 6 o’clock. The movement is hand-wound, with two barrel springs, providing an impressive ninety-six hours of power reserve. The system, known as “volte-face,” places one barrels upside-down over the other. This allows them to deliver their energy simultaneously for a ninety-six hour power reserve.

A noble case of rose gold

It comes in an 18-ct, 5N rose-gold case with a diameter of forty millimetres. The lines are fluid and taut at the same time. The highly technical sapphire crystal dome reveals the many fascinating facets of the meteorite fragments below. As for the openworked lugs, they emphasise the smooth integration of the bracelet.

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